Boneshard Slasher (TOR) from Torment, available at 401 Games Canada.

• Rarity: Uncommon
• Finish: Normal
• Artist: Ron Spencer
• Card Text:
  Flying.
  Threshold — Boneshard Slasher gets +2/+2 and has "When Boneshard Slasher becomes the target of a spell or ability, sacrifice it." (You have threshold as long as seven or more cards are in your graveyard.)